26 results about "Chlorate" patented technology

The invention provides a Fe-Co-Ni series nano-alloy and a preparation method and application thereof, and belongs to the technical field of functional materials. The alloy is prepared by the following steps of: weighing and proportioning 0.5 mmol of each element by taking chlorate or acetylacetonate or acetate of iron, cobalt, nickel, manganese, copper, zinc and the like with the purity of more than 99.5% and other metal chlorides which are rich in earth surface and economical and practical as precursors, putting the precursors into a pressure-resistant bottle, taking n-trioctylphosphine oxide (TOPO) as a ligand, taking ethanol and 1-octadecene (ODE) as a mixed solvent, and uniformly stirring to prepare the alloy. And synthesizing the hexagonal nano-alloy at low temperature by using a wet chemical method. The method can be used for synthesizing 3-10-element medium-entropy and high-entropy alloy, and has a wide application prospect. The synthesis is a precise process which is guided by an organic ligand, is coordinated by multiple metals and is subjected to nucleation-self-assembly-anisotropic growth.

A method of treating a subterranean formation by contacting the formation with the following (a) ammonium bicarbonate; (b) an oxidizing agent selected from a perchlorate or a nitrite or combinations thereof; and (c) an acid (AA).

The present invention relates to systems and methods for catalytic removal of oxidized contaminants (for example, nitrite, chromate, chlorate, trichloroethene, CFC-11, 4-nonylphenol, RDX, and perfluorooctanoate) from water and wastewater. In some aspects, the catalytic method of removing oxidized contaminants comprises using precious metal nanoparticles as catalysts to reduce the oxidized contaminants.

The application discloses activated carbon for reducing content of chlorate in water and a preparation method thereof, and belongs to the technical field of wastewater treatment. The application sequentially constructs a chlorinated glycidyl trimethyl ammonium cation layer for electrostatic adsorption of chlorate and a nano zero-valent iron functional layer for chemical reduction of the chlorate on the coconut shell activated carbon through bridging action and chemical grafting of polydopamine, forms a unique 'adsorption-degradation' integrated structure, greatly improves the treatment efficiency, ensures stability of functional components through chemical bonding, avoids secondary pollution, and has remarkable social, economic and environmental benefits.

A system, comprising: a chlorine source in form of an electrolysis unit to generate an insitu generated active chlorine; wherein a concentration of perchlorate is not more than half of a concentration of chlorate; and pH of a fluid containing in-situ generated active chlorine is more than 7.4; a buffer tank to store a concentrate of in-situ generated active chlorine as a free available chlorine (FAC); a fluid distribution system to supply FAC in form of an in-use fluid to the cabinet; wherein the system is configured to clean and disinfect an article with the fluid while complying with national and international standards for food safety, operator's safety and regulatory requirements regarding the use of biocides.

Aerobic microbial processes comprise culturing microbes comprising a (per)chlorate respiration pathway in a bioreactor in a bioprocess employing microbial respiration of chloroxyanions as a source of oxygen for the bioprocess, in the absence of external addition of molecular oxygen.

The utility model discloses a reactor of chlorine dioxide generator relates to chlorine dioxide preparation technical field, including multistage reaction unit of intercommunication, and the liquid communication pipe and the gas communication pipe are communicated between adjacent reaction unit, and the first stage reaction unit is connected with the feed dynamic mixer, and the last stage reaction unit is connected with the disinfectant outlet pipe and the disinfectant gas outlet pipe. The reactor can realize gas, liquid branch circuit operation in use, make the chlorine dioxide in the reaction liquid in time from the reaction liquid to the gas phase space of reactor, then from disinfectant gas outlet pipe, prevent the chlorine dioxide from the disproportionation reaction and generate chlorate in liquid phase, to improve its reaction effect, raw material conversion rate, chlorine dioxide purity improves obviously, prevented the occurrence of disproportionation reaction.

The invention belongs to the technical field of metal smelting, and relates to a method for synergistically enriching platinum and palladium from a silver anode mud nitric acid leaching solution and preparing sponge palladium in a green short process, which comprises the following steps: adding a diacetyldioxime-thiourea alkaline solution into the silver anode mud nitric acid leaching solution to carry out platinum and palladium co-precipitation to obtain a co-precipitate; after slurrying, adjusting the pH value to 9.0-10.0, and carrying out primary alkaline conversion; then hydrochloric acid is added for secondary conversion, and a chlorate saturated solution is added for a reaction after secondary conversion is finished, so that platinum-palladium-containing filtrate is obtained; then adding an oxidizing agent and ammonium chloride, and reacting to obtain a platinum-palladium co-precipitate; after slurrying, adding a reducing agent for reaction to obtain a palladium-containing solution; then adding an oxidizing agent and ammonium chloride, and reacting to obtain high-purity palladium-containing slag; mixing with ammonia water for complexing, adding hydrazine hydrate after reaction, and reducing to obtain sponge palladium. According to the method, reaction conditions are mild, multi-component recovery of platinum, palladium and silver in the silver anode slime is achieved, and the resource utilization rate is high.

The application discloses a preparation method and application of canthaxanthin, and comprises the following steps: in the presence of beta-carotene, a catalyst, an additive and a solvent, the canthaxanthin is prepared by reaction at a temperature of-20 DEG C to 20 DEG C for 5-24 hours; the catalyst comprises a mixture of chlorate, metal iodide and inorganic acid; the additive comprises a mixture of raw materials represented by formula I, formula II and formula III, wherein the mass ratio of the raw materials represented by formula I, formula II and formula III is 1:(1.0-5.0):(1.0-5.0); and the total additive amount of the additive is 0.01-1 times the mass of the beta-carotene. The preparation method of the canthaxanthin has the characteristics of fast reaction speed, high product yield, less generation of three wastes, strong coloring capacity of the product and excellent thermal stability, and has great competitive advantage in the field of food and drug additives.

Provided is a nickel recovery method for efficiently recovering nickel from a nickel solution containing 2,2'- bipyridine and a nickel compound generated in an organic chemical reaction process.　The nickel recovery method according to the present invention comprises: (a) a step for preparing a nickel solution containing 2,2'- bipyridine and a nickel compound generated in an organic chemical reaction process; (b) a step for adding an alkali metal perchlorate to the nickel solution to form a tris (2,2'- bipyridine) perchlorate nickel salt serving as an ion pair; and (c) a step for recovering the tris (2,2'- bipyridine) perchlorate nickel salt.

The application provides a kind of detecting perchlorate ratio type probe and its preparation method and application, it is related to analytical detection technical field, the ratio type probe includes poly (3- ((4-methyl thiophene-3-oxyl) propyl) pyridine), preparation method includes: 3- (3-bromopropoxy) -4-methyl thiophene and pyridine are mixed and reacted, 3- ((4-methyl thiophene-3-oxyl) propyl) pyridine is synthesized, it is reacted with anhydrous chloroform, anhydrous ferric chloride and obtained intermediate product;Intermediate product is transferred and filtered, and solid precipitate is obtained, methanol is added, and hydrazine hydrate is added dropwise to reduce, then filter, the methanol of filtrate is removed by evaporation, and the crude product is obtained;The crude product is dialyzed and purified, and poly (3- ((4-methyl thiophene-3-oxyl) propyl) pyridine) is obtained.The ratio type probe provided by the application shows chromatic aberration response and high detection sensitivity. ‑ ​

The application aims to provide a preparation method of a cathode electrode for electrocatalytic reduction of chlorate and application thereof, and belongs to the technical field of chlorate treatment. The application realizes electrocatalytic reduction of chlorate by virtue of non-noble metal and excellent redox capacity of transition metal elements. The system uses molybdenum foil as a base material and loads Pd / C. By virtue of hydrogenation activation of Pd and excellent redox performance of multivalent Mo species, electrocatalytic reduction of chlorate is effectively realized. The catalytic system reduces occurrence of a hydrogen evolution side reaction, realizes selective reduction of chlorate, and guarantees stability and high efficiency of catalytic reduction.

The invention provides biocidal compositions comprising aqueous solutions of hypochlorite buffered with an organic acid and a base and in which chlorate, as a percentage of all active species of chlorine present, is less than a threshold value such as 5.4% for at least six months after the composition is made.

A method of reducing activity of sulfur and / or nitrogen metabolizing bacteria is provided. The method includes adding a composition of an alkali metal salt of chlorite and / or an alkali metal salt of chlorate and hydrogen peroxide to process water of a cooling tower and increasing a concentration of the composition from about 0 ppm to about 300 ppm in about 1 to about 100 minutes.

The invention discloses a method for high-selectivity synthesis of pyridoxine phosphate based on a phase transfer catalysis system. According to the method, pyridoxine phosphate is used as an initial raw material, and in a water-organic solvent two-phase system, under the synergistic catalysis of a phase transfer catalyst and TEMPO, chlorite and pypocholoride are used for oxidation. The quaternary ammonium salt phase transfer catalyst is introduced, so that the reaction activation energy is remarkably reduced, and the reaction can be quickly carried out at the low temperature of 0-10 DEG C; meanwhile, a specific narrow window of which the reaction pH value is 5.8-6.2 is accurately locked. The method effectively solves the technical problems that the reaction rate is slow, phosphate bonds are easy to hydrolyze and pyridine rings are easy to generate chlorination side reaction when a traditional TEMPO oxidation system is used for preparing compounds containing phosphate groups. The yield of the obtained product can reach 90% or above, the content of specific dephosphorized impurities is lower than 0.05%, and the method is suitable for preparing high-purity medical standard substances.

The present invention relates to a semi-synthetic nano-soluble compound designed to improve the bioresistance and effectiveness of lubricants in metal processing. This compound incorporates nanoadditives that optimise properties such as thermal conductivity and wear resistance, resulting in more effective lubrication and extending the useful life of the tools. The compound is formulated with several key components, including a base oil, viscosity modifiers, dispersing agents, anti-wear agents, heat stabilisers, emulsifiers and biocides in specific proportions. Unlike conventional formulations, this invention is characterised in that it avoids the use of harmful additives such as chlorates, sulphates and phosphates. The synergy between the nanoadditives and the other ingredients significantly reduces friction, thereby optimising working conditions in biologically contaminated environments. In addition, the resulting emulsion is stable, thus maintaining its effectiveness over time and improving the performance of cutting tools in industrial processes.

The application relates to the field of luminescent materials, in particular to a terbium stannum chlorate and a preparation method thereof. The preparation method of the terbium stannum chlorate comprises the following steps: taking stannous chloride dihydrate and a terbium salt as precursors, dissolving the precursors in a solvent at room temperature to form a solution A; performing spin coating on a substrate to form a film, and heating to obtain a terbium stannum chlorate film based on the substrate. The method has the advantages of simple preparation process, low requirement on equipment, high controllability, less heat budget in the preparation process, and excellent photoluminescence performance of the product.

The invention belongs to the technical field of precious metal recovery, and relates to a method for separating and purifying an iridium-tin mixture and application thereof. The method comprises the following steps: filtering out filter residues from a mixture of ammonium chloroiridate and ammonium chloroiridate, adding pure water into the filter residues, slurrying, heating, adding a reducing agent for reduction until no black solid exists in the solution, stirring, adding ammonia water to adjust the pH value until no white precipitate is generated, filtering, heating the filtrate, adding hydrochloric acid and ammonium chloride, filtering, and drying to obtain the ammonium chloroiridate. And then adding an oxidizing agent to carry out oxidation precipitation, filtering, and washing the filtered filter residue with ammonium chloride water to obtain pure ammonium chloroiridate. According to the method, iridium and tin are converted into chlorates with similar properties in a chemical precipitation mode, the dissolution process under the subsequent mild condition can be conveniently achieved, the chlorates of iridium and tin are transferred into a liquid phase through the reduction dissolution process, and the agent use amount and iridium loss in the subsequent hydrolysis process are greatly reduced.

The present invention relates to a method for producing graphene by an electrochemical non-oxidative exfoliation method. The method for producing graphene is performed by using an electrolyte solution comprising: a first electrolyte including sodium chloride (NaCl); and a second electrolyte including a chlorate compound, a quaternary ammonium salt compound, or a combination thereof, and is excellent in terms of yield, carbon / oxygen content ratio, defectivity, and degree of graphitization.

To provide a detergent composition capable of cleaning at a temperature lower than a conventional cleaning temperature (70-80 °C) and having a high cleaning effect.SOLUTION: The cleaning composition according to the present disclosure comprises component A: 0.1 to 6 mass% of an alkali metal hydroxide, component B: 0.1 to 5 mass% of an alkali metal hypochlorite, component C: 0.1 to 10 mass% of a silicate, component D: 0.01 to 1.0 mass% of a nonionic surfactant, component E: 0.1 to 10 mass% of a solubilizing agent, component F: 0.5 to 7 mass% of a polymeric dispersant or a phosphonate, and water.SELECTED DRAWING: Figure 1

The present document generally relates to methods and materials involved in producing tobacco or smokeless tobacco product comprising chlorate. For example, chlorate can be used to reduce tobacco specific nitrosamine content in tobacco or smokeless tobacco products.

The present document generally relates to methods and materials involved in producing tobacco or smokeless tobacco product comprising chlorate. For example, chlorate can be used to reduce tobacco specific nitrosamine content in tobacco or smokeless tobacco products.

The present application belongs to the technical field of metal smelting, and relates to a method for cooperatively enriching platinum and palladium from silver anode slime nitric acid leaching solution and preparing sponge palladium by a green short process, which comprises the following steps: adding diacetyldioxime-thiourea alkaline solution to the silver anode slime nitric acid leaching solution to perform co-precipitation of platinum and palladium, and obtaining co-precipitate; after slurry, adjusting to pH 9.0-10.0 to perform primary alkaline conversion; then adding hydrochloric acid to perform secondary conversion, and after the end, adding saturated chlorate solution to perform reaction, and obtaining platinum and palladium-containing filtrate; then adding oxidizing agent and ammonium chloride to perform reaction to obtain platinum and palladium co-precipitate; after slurry, adding reducing agent to perform reaction to obtain palladium-containing solution; then adding oxidizing agent and ammonium chloride to perform reaction to obtain high-purity palladium-containing residue; mixing the residue with ammonia water to perform complexation, adding hydrazine hydrate after reaction, and obtaining sponge palladium through reduction. The method has mild reaction conditions, realizes multi-component recovery of platinum, palladium and silver in the silver anode slime, and has high resource utilization rate.

The application discloses a chlorine-oxygen double vacancy FeOCl catalyst and a preparation method and application thereof in removal of organic pollutants in water by activating chlorite, and relates to the technical field of organic wastewater treatment. The chlorine-oxygen double vacancy FeOCl catalyst is successfully constructed on the surface of FeOCl through a two-step method (heat treatment + reaction under illumination). The synergistic effect of the chlorine-oxygen double vacancy significantly enhances the activation capacity of FeOCl on chlorite, and the removal rate of the organic pollutants, especially antibiotic organic pollutants, is higher than that of FeOCl materials without illumination treatment. The chlorine-oxygen double vacancy FeOCl catalyst constructed in the application can simultaneously generate selective high-valence metal substances and ClO2 in the chlorite activation advanced oxidation system, realizes selective oxidative degradation of various representative organic pollutants, and can maintain high and stable removal performance in a wide pH range and various water body substrates, and exhibits good environmental adaptability.

A brine acidity control system includes a brine distribution device that divides the brine into a main pipeline and a secondary pipeline; a plate heat exchanger assembly that forms a closed-loop temperature control loop for the flowing brine; a hydrochloric acid injection assembly for pumping hydrochloric acid from a storage tank into the secondary pipeline; a mixing control assembly for mixing hydrochloric acid with the brine; a reaction assembly including a chlorate decomposition tank; and a safety monitoring assembly including flow indication control alarm, temperature indication control alarm, and a motor control center. Compared with existing technologies, this invention effectively reduces the chlorate content in the brine system of caustic soda plants. By using a metering pump and flow meter to form a closed-loop control loop, it uniformly adds hydrochloric acid reagent, precisely controls the amount of acid added, regulates the acidity of the reaction environment, ensures rapid and complete decomposition of chlorate under optimal conditions, avoids the side effects of excessive acid, ensures that the brine process indicators meet standards, controls the reaction temperature, and ensures safe production.

The invention discloses a potassium ferrate preparation process, and belongs to the field of potassium ferrate synthesis, the potassium ferrate preparation process comprises the following steps: S1, slowly dropwise adding sulfuric acid into hydrogen peroxide and a hydrogen peroxide stabilizer at-5-5 DEG C, stirring while dropwise adding, and reacting for a period of time to obtain an oxidation solution; and S2, at 0-10 DEG C, dropwise adding a ferrous sulfate solution and potassium hydroxide into the oxidation liquid obtained in the step S1 while stirring, stirring for a certain time, adding a potassium hydroxide solid to adjust the pH value, continuing to react, and carrying out suction filtration, recrystallization, washing and drying to obtain the potassium ferrate. Hydrogen peroxide and sulfuric acid can be used as raw materials, so that direct use of chlorine, pypocholoride and other dangerous reagents which are easy to introduce chlorine impurities is avoided.